x86: UV startup of slave cpus

This patch changes smpboot.c so that it can start slave cpus running
in UV non-unique apicid mode. The SIPI must be sent using a UV-specific
mechanism.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 20 insertions, 9 deletions

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index e6abe8a49b1f..6a925394bc7e 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -61,6 +61,7 @@
 #include <asm/mtrr.h>
 #include <asm/nmi.h>
 #include <asm/vmi.h>
+#include <asm/genapic.h>
 #include <linux/mc146818rtc.h>
 
 #include <mach_apic.h>
@@ -677,6 +678,12 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
         unsigned long send_status, accept_status = 0;
         int maxlvt, num_starts, j;
 
+        if (get_uv_system_type() == UV_NON_UNIQUE_APIC) {
+                send_status = uv_wakeup_secondary(phys_apicid, start_eip);
+                atomic_set(&init_deasserted, 1);
+                return send_status;
+        }
+
         /*
          * Be paranoid about clearing APIC errors.
          */
@@ -918,16 +925,19 @@ do_rest:
 
         atomic_set(&init_deasserted, 0);
 
-        Dprintk("Setting warm reset code and vector.\n");
+        if (get_uv_system_type() != UV_NON_UNIQUE_APIC) {
 
-        store_NMI_vector(&nmi_high, &nmi_low);
+                Dprintk("Setting warm reset code and vector.\n");
 
-        smpboot_setup_warm_reset_vector(start_ip);
-        /*
-         * Be paranoid about clearing APIC errors.
-         */
-        apic_write(APIC_ESR, 0);
-        apic_read(APIC_ESR);
+                store_NMI_vector(&nmi_high, &nmi_low);
+
+                smpboot_setup_warm_reset_vector(start_ip);
+                /*
+                 * Be paranoid about clearing APIC errors.
+                */
+                apic_write(APIC_ESR, 0);
+                apic_read(APIC_ESR);
+        }
 
         /*
          * Starting actual IPI sequence...
@@ -966,7 +976,8 @@ do_rest:
                         else
                                 /* trampoline code not run */
                                 printk(KERN_ERR "Not responding.\n");
-                        inquire_remote_apic(apicid);
+                        if (get_uv_system_type() != UV_NON_UNIQUE_APIC)
+                                inquire_remote_apic(apicid);
                 }
         }